| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <zircon/syscalls/smc.h> |
| |
| #include <cstdint> |
| |
| #include <ddk/binding.h> |
| #include <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/platform-defs.h> |
| #include <ddk/protocol/platform/bus.h> |
| |
| #include "astro.h" |
| |
| namespace astro { |
| |
| // The Astro Secure OS memory region is defined within the bootloader image. |
| // The ZBI provided to the kernel must mark this memory space as reserved. |
| // The OP-TEE driver will query OP-TEE for the exact sub-range of this memory |
| // space to be used by the driver. |
| #define ASTRO_SECURE_OS_BASE 0x05300000 |
| #define ASTRO_SECURE_OS_LENGTH 0x02000000 |
| |
| static const pbus_mmio_t astro_tee_mmios[] = { |
| { |
| .base = ASTRO_SECURE_OS_BASE, |
| .length = ASTRO_SECURE_OS_LENGTH, |
| }, |
| }; |
| |
| static const pbus_bti_t astro_tee_btis[] = { |
| { |
| .iommu_index = 0, |
| .bti_id = BTI_TEE, |
| }, |
| }; |
| |
| static const pbus_smc_t astro_tee_smcs[] = { |
| { |
| .service_call_num_base = ARM_SMC_SERVICE_CALL_NUM_TRUSTED_OS_BASE, |
| .count = ARM_SMC_SERVICE_CALL_NUM_TRUSTED_OS_LENGTH, |
| .exclusive = false, |
| }, |
| }; |
| |
| static const pbus_dev_t tee_dev = []() { |
| pbus_dev_t dev = {}; |
| dev.name = "tee"; |
| dev.vid = PDEV_VID_GENERIC; |
| dev.pid = PDEV_PID_GENERIC; |
| dev.did = PDEV_DID_OPTEE; |
| dev.mmio_list = astro_tee_mmios; |
| dev.mmio_count = countof(astro_tee_mmios); |
| dev.bti_list = astro_tee_btis; |
| dev.bti_count = countof(astro_tee_btis); |
| dev.smc_list = astro_tee_smcs; |
| dev.smc_count = countof(astro_tee_smcs); |
| return dev; |
| }(); |
| |
| constexpr zx_bind_inst_t root_match[] = { |
| BI_MATCH(), |
| }; |
| constexpr zx_bind_inst_t sysmem_match[] = { |
| BI_MATCH_IF(EQ, BIND_PROTOCOL, ZX_PROTOCOL_SYSMEM), |
| }; |
| constexpr device_fragment_part_t sysmem_fragment[] = { |
| {countof(root_match), root_match}, |
| {countof(sysmem_match), sysmem_match}, |
| }; |
| constexpr device_fragment_t fragments[] = { |
| {"sysmem", countof(sysmem_fragment), sysmem_fragment}, |
| }; |
| |
| zx_status_t Astro::TeeInit() { |
| zx_status_t status = |
| pbus_.CompositeDeviceAdd(&tee_dev, fragments, countof(fragments), UINT32_MAX); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: CompositeDeviceAdd failed: %d", __func__, status); |
| return status; |
| } |
| return ZX_OK; |
| } |
| |
| } // namespace astro |